EP1239598A3 - Interference-signal removing apparatus - Google Patents

Interference-signal removing apparatus Download PDF

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Publication number
EP1239598A3
EP1239598A3 EP20010308101 EP01308101A EP1239598A3 EP 1239598 A3 EP1239598 A3 EP 1239598A3 EP 20010308101 EP20010308101 EP 20010308101 EP 01308101 A EP01308101 A EP 01308101A EP 1239598 A3 EP1239598 A3 EP 1239598A3
Authority
EP
European Patent Office
Prior art keywords
interference
signals
input signals
signal
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20010308101
Other languages
German (de)
French (fr)
Other versions
EP1239598A2 (en
Inventor
Masatoshi Hitachi Kokusai Electric Inc. Takada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Kokusai Electric Inc
Original Assignee
Hitachi Kokusai Electric Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Kokusai Electric Inc filed Critical Hitachi Kokusai Electric Inc
Publication of EP1239598A2 publication Critical patent/EP1239598A2/en
Publication of EP1239598A3 publication Critical patent/EP1239598A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/71—Interference-related aspects the interference being narrowband interference
    • H04B1/7101—Interference-related aspects the interference being narrowband interference with estimation filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

To provide an interference-signal removing apparatus for improving the quality of interference-removed input signals by removing only interference signals having a comparatively high level from input signals including wide-band signals and narrow-band interference signals. For example, input-signal control means 1 and 2 restrict effective word lengths of digital values of input signals, interference-signal estimation means 3 estimates interference signals included in input signals in accordance with effective-word-length-restricted input signals, interference-signal extraction means 4 extracts interference signals included input signals in accordance with an estimation result of the interference-signal estimation means, and interference-signal removal means 5 removes extracted interference signals from input signals.
EP20010308101 2001-03-09 2001-09-24 Interference-signal removing apparatus Withdrawn EP1239598A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001067601 2001-03-09
JP2001067601A JP4548954B2 (en) 2001-03-09 2001-03-09 Interference signal canceller

Publications (2)

Publication Number Publication Date
EP1239598A2 EP1239598A2 (en) 2002-09-11
EP1239598A3 true EP1239598A3 (en) 2003-12-10

Family

ID=18925927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010308101 Withdrawn EP1239598A3 (en) 2001-03-09 2001-09-24 Interference-signal removing apparatus

Country Status (4)

Country Link
US (1) US20020155812A1 (en)
EP (1) EP1239598A3 (en)
JP (1) JP4548954B2 (en)
HK (1) HK1045616A1 (en)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6807405B1 (en) 1999-04-28 2004-10-19 Isco International, Inc. Method and a device for maintaining the performance quality of a code-division multiple access system in the presence of narrow band interference
EP1202468A3 (en) * 2000-10-27 2004-01-14 Hitachi Kokusai Electric Inc. Interference-signal removing apparatus
JP2002374179A (en) * 2001-06-12 2002-12-26 Hitachi Kokusai Electric Inc Interference signal removal device
CN1552146A (en) * 2001-09-28 2004-12-01 Apparatus and method for inhibiting periodic interference signals
US7139543B2 (en) * 2002-02-01 2006-11-21 Qualcomm Incorporated Distortion reduction in a wireless communication device
GB0214729D0 (en) * 2002-06-26 2002-08-07 Koninkl Philips Electronics Nv Digital receiver arrangement and related method
US7697595B2 (en) 2006-05-11 2010-04-13 Tensorcomm Incorporated Interference cancellation in variable codelength systems for multi-access communication
JP3751600B2 (en) * 2003-03-27 2006-03-01 株式会社東芝 Receiving apparatus and receiving method
KR100584407B1 (en) 2003-06-30 2006-05-26 삼성전자주식회사 Device and Method for measuring received signal power in mobile communication systems
US7197291B2 (en) * 2003-10-03 2007-03-27 Motorola, Inc. Multimode receiver and method for controlling signal interference
US7683827B2 (en) * 2004-12-15 2010-03-23 Valeo Radar Systems, Inc. System and method for reducing the effect of a radar interference signal
US7403153B2 (en) * 2004-12-15 2008-07-22 Valeo Raytheon Systems, Inc. System and method for reducing a radar interference signal
JP4567480B2 (en) * 2005-02-04 2010-10-20 富士通株式会社 Signal transmission system and signal transmission method
US7525942B2 (en) * 2005-09-01 2009-04-28 Isco International, Inc. Method and apparatus for detecting interference using correlation
US7617731B2 (en) 2006-07-18 2009-11-17 Panasonic Corporation Ultrasonic measuring apparatus and ultrasonic measuring method
KR100844828B1 (en) * 2006-11-24 2008-07-08 주식회사알에프윈도우 Radio Frequency Repeater for cancelling feedback interference signal with built in antenna
JP2009296532A (en) * 2008-06-09 2009-12-17 Hitachi Kokusai Electric Inc Receiver
JP2009182596A (en) * 2008-01-30 2009-08-13 Hitachi Kokusai Electric Inc Receiver
JP4313843B2 (en) 2007-10-01 2009-08-12 パナソニック株式会社 Ultrasonic measuring apparatus and ultrasonic measuring method
US8897269B2 (en) * 2008-01-30 2014-11-25 Qualcomm Incorporated Method and apparatus for mitigating pilot pollution in a wireless network
US9048919B2 (en) 2008-11-11 2015-06-02 Isco International Llc Method and apparatus for an adaptive filter architecture
US8385483B2 (en) 2008-11-11 2013-02-26 Isco International, Llc Self-adaptive digital RF bandpass and bandstop filter architecture
KR101001662B1 (en) 2008-11-18 2010-12-15 한국과학기술원 Method for decoding received signal in wireless network system
US20110081243A1 (en) * 2009-10-02 2011-04-07 Sullivan John T Helical airfoil wind turbines
JP2012004918A (en) * 2010-06-17 2012-01-05 Sharp Corp Wireless communication device, reception method and its program
JP5715480B2 (en) * 2011-05-02 2015-05-07 日本無線株式会社 Multipath interference equalization filter and receiving apparatus
JP5794066B2 (en) * 2011-09-15 2015-10-14 三菱電機株式会社 Satellite communication system and communication apparatus
US9172476B2 (en) * 2012-03-09 2015-10-27 The United States Of America As Represented By The Secretary Of The Army Method and system for removal of noise in signal
US9363024B2 (en) * 2012-03-09 2016-06-07 The United States Of America As Represented By The Secretary Of The Army Method and system for estimation and extraction of interference noise from signals
US8750792B2 (en) * 2012-07-26 2014-06-10 Remec Broadband Wireless, Llc Transmitter for point-to-point radio system
US20150333876A1 (en) * 2012-12-13 2015-11-19 Zte Wistron Telecom Ab Method and apparatus for a modified harq procedure after a receiver outage event
US9319916B2 (en) 2013-03-15 2016-04-19 Isco International, Llc Method and appartus for signal interference processing
US9425840B2 (en) * 2013-04-26 2016-08-23 Northrop Grumman Systems Corporation Wideband tunable notch cancellation
US9306654B2 (en) * 2014-01-10 2016-04-05 Qualcomm Incorporated Opportunistic active interference cancellation using RX diversity antenna
US9794888B2 (en) 2014-05-05 2017-10-17 Isco International, Llc Method and apparatus for increasing performance of a communication link of a communication node
KR101598719B1 (en) * 2014-12-05 2016-03-03 한국항공우주연구원 Noise tone elimination method in digital area for synthetic aperture radar receiver, synthetic aperture radar receiver and computer readable record-midium on which program for excuting method thereof
EP3292642B1 (en) 2015-05-04 2020-01-29 ISCO International, LLC Method and apparatus for increasing performance of communication paths for communication nodes
US9654158B2 (en) 2015-10-20 2017-05-16 The Aerospace Corporation Circuits and methods for reducing an interference signal that spectrally overlaps a desired signal
US10340962B2 (en) * 2016-05-06 2019-07-02 The Aerospace Corporation Amplitude domain circuits and methods for reducing an interference signal that spectrally overlaps a desired signal
CA3024175C (en) 2016-06-01 2024-06-11 Isco International, Llc Method and apparatus for performing signal conditioning to mitigate interference detected in a communication system
US10298279B2 (en) 2017-04-05 2019-05-21 Isco International, Llc Method and apparatus for increasing performance of communication paths for communication nodes
US10812121B2 (en) 2017-08-09 2020-10-20 Isco International, Llc Method and apparatus for detecting and analyzing passive intermodulation interference in a communication system
US10284313B2 (en) 2017-08-09 2019-05-07 Isco International, Llc Method and apparatus for monitoring, detecting, testing, diagnosing and/or mitigating interference in a communication system
CN107979436B (en) * 2017-11-10 2020-01-14 广州海格通信集团股份有限公司 Interference signal generation method and device, computer equipment and storage medium
DE102018221285A1 (en) * 2018-12-10 2020-06-10 Zf Friedrichshafen Ag Interference suppression and signal recovery methods
JP7434900B2 (en) 2020-01-07 2024-02-21 船井電機株式会社 wireless communication device
US11212015B2 (en) 2020-05-19 2021-12-28 The Aerospace Corporation Interference suppression using machine learning
US11552675B1 (en) * 2021-07-01 2023-01-10 L3Harris Technologies, Inc. Excision of interference with hopped waveforms

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812069A2 (en) * 1996-06-05 1997-12-10 Sharp Kabushiki Kaisha Dual-mode cellular telephone system
WO2000046929A1 (en) * 1999-02-02 2000-08-10 Lockheed Martin Canada Maintaining performance quality of broadband system in the presence of narrow band interference

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186349A (en) * 1977-12-27 1980-01-29 E-Systems, Inc. Adaptive narrow band noise estimator/suppressor radio receiver
JPH03248081A (en) * 1990-02-27 1991-11-06 Kaijo Corp Interference filter circuit for ultrasonic underwater detector
JPH06132838A (en) * 1992-10-21 1994-05-13 Kokusai Denshin Denwa Co Ltd <Kdd> Out-band interference wave removing device
JP3416276B2 (en) * 1994-07-15 2003-06-16 日本無線株式会社 Interference wave removal device
FI105517B (en) * 1996-10-18 2000-08-31 Nokia Networks Oy Reception method and receiver
JP2976281B2 (en) * 1997-02-07 1999-11-10 株式会社村田製作所 Spread spectrum communication equipment
JP3209171B2 (en) * 1998-01-08 2001-09-17 日本電気株式会社 Video encoding device
US6122309A (en) * 1998-01-30 2000-09-19 Motorola, Inc. Method and apparatus for performing interference suppression using modal moment estimates
US6219376B1 (en) * 1998-02-21 2001-04-17 Topcon Positioning Systems, Inc. Apparatuses and methods of suppressing a narrow-band interference with a compensator and adjustment loops
JP3545932B2 (en) * 1998-02-26 2004-07-21 日本電信電話株式会社 Array antenna device for mobile communication base station and control method therefor
US6426983B1 (en) * 1998-09-14 2002-07-30 Terayon Communication Systems, Inc. Method and apparatus of using a bank of filters for excision of narrow band interference signal from CDMA signal
AU2261599A (en) * 1998-10-27 2000-05-15 Bae Systems Canada Inc. A narrowband interference canceller for a direct-sequence spread-spectrum communications system
US6807405B1 (en) * 1999-04-28 2004-10-19 Isco International, Inc. Method and a device for maintaining the performance quality of a code-division multiple access system in the presence of narrow band interference
JP3505108B2 (en) * 1999-02-24 2004-03-08 株式会社日立国際電気 Receiving machine
JP2000307476A (en) * 1999-04-21 2000-11-02 Kokusai Electric Co Ltd Receiver
JP3675670B2 (en) * 1999-05-27 2005-07-27 パイオニア株式会社 Receiver
US6407699B1 (en) * 2000-04-14 2002-06-18 Chun Yang Method and device for rapidly extracting time and frequency parameters from high dynamic direct sequence spread spectrum radio signals under interference
EP1202468A3 (en) * 2000-10-27 2004-01-14 Hitachi Kokusai Electric Inc. Interference-signal removing apparatus
JP2002374179A (en) * 2001-06-12 2002-12-26 Hitachi Kokusai Electric Inc Interference signal removal device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812069A2 (en) * 1996-06-05 1997-12-10 Sharp Kabushiki Kaisha Dual-mode cellular telephone system
WO2000046929A1 (en) * 1999-02-02 2000-08-10 Lockheed Martin Canada Maintaining performance quality of broadband system in the presence of narrow band interference

Also Published As

Publication number Publication date
HK1045616A1 (en) 2002-11-29
EP1239598A2 (en) 2002-09-11
US20020155812A1 (en) 2002-10-24
JP2002271234A (en) 2002-09-20
JP4548954B2 (en) 2010-09-22

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